I just noticed that the tooltips on the icons (Ideas, Questions, etc.) on the summary page of user comments are displayed untranslated (they remain in English), whereas they appear correctly translated on the summary page of user topics.
As an example, compare the two pages for Vladimir, in another language than English:
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Satisfaction mark by Ryann 7 years ago
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We've noticed this problem in the user's comments only and have fixed it.
Seems like user's topics work fine. If it doesn't work for you please provide us a screenshot with your problem.